EP0684120B1 - Verfahren zur Einbettung eines Dekors, insbesondere Textil, in einem Kunststoffteil - Google Patents

Verfahren zur Einbettung eines Dekors, insbesondere Textil, in einem Kunststoffteil Download PDF

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Publication number
EP0684120B1
EP0684120B1 EP95401196A EP95401196A EP0684120B1 EP 0684120 B1 EP0684120 B1 EP 0684120B1 EP 95401196 A EP95401196 A EP 95401196A EP 95401196 A EP95401196 A EP 95401196A EP 0684120 B1 EP0684120 B1 EP 0684120B1
Authority
EP
European Patent Office
Prior art keywords
medallion
decorative sheet
mould
piece
plastics material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95401196A
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English (en)
French (fr)
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EP0684120A1 (de
Inventor
Daniel Noirot
Olivier Vitrant
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre dEtude et de Recherche pour lAutomobile CERA
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Centre dEtude et de Recherche pour lAutomobile CERA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR9406382A external-priority patent/FR2720319B1/fr
Application filed by Centre dEtude et de Recherche pour lAutomobile CERA filed Critical Centre dEtude et de Recherche pour lAutomobile CERA
Publication of EP0684120A1 publication Critical patent/EP0684120A1/de
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Publication of EP0684120B1 publication Critical patent/EP0684120B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14795—Porous or permeable material, e.g. foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
    • B29C45/1639—Removable partitions between adjacent mould cavity portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1671—Making multilayered or multicoloured articles with an insert
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14901—Coating a sheet-like insert smaller than the dimensions of the adjacent mould wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14901—Coating a sheet-like insert smaller than the dimensions of the adjacent mould wall
    • B29C2045/14909—Coating a sheet-like insert smaller than the dimensions of the adjacent mould wall the edge of the sheet-like insert being hidden, e.g. in a groove or protruding into the injected material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14983—Bursting or breakthrough of the insert by the injection pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/78—Moulding material on one side only of the preformed part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3041—Trim panels

Definitions

  • the present invention relates to a method of including a decor in sheet, in particular of textile material, in medallion on the surface of a piece in plastic material, as well as a mold intended for the implementation of this process and a part obtained by this process.
  • medallions can be included here process, either simultaneously or successively, in the same room which, itself can be made up of one or more parts.
  • Such parts are for example known in the field of industry automobile.
  • certain door fittings are visible, that is to say from inside the vehicle, the appearance of a plastic part with an insert on its surface, or, in other words, a medallion, a decoration in sheet, for example fabric at the armrest.
  • Plastic also serves as a support for the sheet decoration, i.e. forms the volume of the armrest itself, and is therefore not directly visible.
  • Another insert can form the bottom of the door.
  • the peripheral plastic part, without decoration other than its own surface finish, and the medallion, consisting of the decor sheet and its supporting plastic material, are produced separately and then assembled either directly or offline, for example by means of staples.
  • the medallion itself is obtained by overmolding the decor with its material support plastic.
  • the present invention aims to overcome these drawbacks. More in particular, the object of the invention is to provide means enabling a minimum of operations to include on the surface of a plastic part one or more decor sheets, for example of textile material, preformed or not, the different parts of the part being solidly interconnected, just as the decor is securely attached to the room.
  • one or more decor sheets for example of textile material, preformed or not, the different parts of the part being solidly interconnected, just as the decor is securely attached to the room.
  • the invention firstly relates to a method according to claim 1.
  • the edge of the decor sheet crosses the finished piece, passing from a from its sides to the other at the junction between the plastic material of the medallion and that of the periphery. It therefore ensures a bond of adhesion between the part of the part on which it is placed and the peripheral part. She is also itself firmly held due to its pinching.
  • the plastic is injected in first place in the volume located under the decor sheet.
  • the invention also relates to a mold according to claim 3.
  • said first part of the mold includes at least a third element, annular and surrounding the element corresponding to the medallion, and likely to be applied to the second part of the mold for isolating said first injection volume from said second volume injection.
  • said third element can be arranged to slide between the element corresponding to the medallion and the element corresponding to the peripheral part of the mold.
  • This third element which therefore forms a peripheral telescope at medallion, allows to delimit and isolate for injection the volume corresponding to the latter of the peripheral volume.
  • the external surface of the part can be smooth; in the case on the contrary, this surface forms a groove around the medallion.
  • the mold advantageously includes notches spaced apart formed in the area where the two injection volumes are opposite on either side of the decor sheet.
  • the distance between said notches is less than about 1 mm for a decor in plastic film, between about 1 and 3 mm for a textile sheet decoration with a tight structure, for example in mesh, and approximately between 3 and 5 mm for a sheet decoration with structure loose, for example in warp and weft.
  • the depth of the notches can be between 1 and 5 mm, and by example be of the order of the distance between notches.
  • the present invention also relates to a part made of plastic according to claim 8 or 9.
  • the unity of the room is therefore achieved either through the decor sheet or through him.
  • the first case is where this leaf is susceptible to be penetrated by the injected plastic, for example when it is in textile material.
  • the second case is where the decor sheet is impermeable to the injected plastic, the unit is then obtained by adhesion on this sheet of material injected on both sides.
  • the mold shown in the figures comprises a fixed bottom plate 1 mold comprising in particular the shutter cylinders.
  • the support plate 2 also receives a fixed imprint 3 of medallion intended to conform the back of the plastic support material the decor sheet.
  • the movable part of the mold firstly comprises a movable plate 4 of bottom of mold bearing the movable imprint 5 of the medallion as well as the part 6 of the peripheral imprint, intended to conform the location of the part panel device. It is therefore this part 6 of the mold which gives its finished appearance to the plastic part of the panel.
  • the back of this plastic part is shaped using a intermediate impression 7, part of which is, in this case, made up of a core 8.
  • the intermediate impression 7 carries the ejection device 9 actuating the ejectors 10.
  • the core 8 itself constitutes, here, an ejector and is therefore also driven by the device 9.
  • a medallion bezel 11 consists of a tubular element, the cross section corresponds to the projection of the periphery of the medallion parallel to the generators of the tube.
  • the bezel is arranged to slide between the imprints 5 and 6.
  • Actuating means 12 are provided for this effect, allowing the telescope to be moved from an extended position, represented by example in Figure 1, where its free edge protrudes from imprints 5 and 6, at a retracted position, shown for example in Figures 3 and 8.
  • the molding of a door panel is carried out as follows. A person skilled in the art will know how to assemble the various constituent elements of the mold on the injection press to obtain the movements described below.
  • the mold is firstly opened in the position of FIG. 1.
  • the impression 7 is in an intermediate position between the fixed part of the mold and the part of the mold secured to the movable plate 4 at the bottom of the mold.
  • the ejectors are out, having been used at the end of the previous cycle.
  • the glasses 11 is in the retracted position.
  • the decor sheet 20 is placed on the medallion imprint 3.
  • the ejectors 10 are then retracted and the plane main seal is closed by bringing the periphery of the cavity 7 into abutment around the edge of the imprint 6.
  • the auxiliary joint plane is closed, which has the effect of completely closing the mold. This is done in moving all the moving parts towards the fixed part until that they come into abutment against each other. It is during this stage that the decor sheet 20 is formed, if this has not been done before during an independent stage.
  • the edge 22 of the sheet 20 is pinched between the imprint fixed 3 of medallion and the free edge of the bezel 11. Plastic is then injected into volume 23.
  • the main joint plane is also open, and the ejectors 10 are actuated, thereby causing the panel to be removed from the mold.
  • the device returned to its original position where a new decor sheet can be used to manufacture the next panel.
  • the telescope 11 has spaced notches 30 formed along its edge, on the side facing the medallion.
  • the decor sheet 20 is crossed at the locations of these notches, where even bursts under the action the pressure if it is sufficiently tight to this plastic material.
  • the notches could be formed into another location of the area where the injection cavities 21 and 23 are opposite on either side of the decor sheet 20, for example in the upper part 31 of part 6 of the mold, facing the edge of the bezel 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Details Of Garments (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Decoration Of Textiles (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (10)

  1. Verfahren zur Einbettung einer Dekorfolie, insbesondere aus Textil, in Form eines Einschlusses an der Oberfläche eines Werkstücks aus Kunststoff, mit den Schritten:
    Verwendung eines mindestens zweiteiligen Spritzwerkzeugs, wobei mindestens ein Werkzeugteil aus mindestens zwei Elementen besteht, wobei mindestens ein Element (5) dem Einschluss und mindestens ein anderes Element (6) der Werkstückaußenkontur um den Einschluss herum entspricht;
    Aufbringen der Dekorfolie (20) auf das dem Einschluss entsprechende Element und Schließen des Spritzwerkzeugs;
    Abgrenzung des unter der Dekorfolie befindlichen Hohlraumes (23) vom umlaufenden Hohlraum (21) im Werkzeuginnenraum unter Einsatz eines Spritzwerkzeuges, bei dem der mit den Elementen versehende Werkzeugteil mindestens ein drittes ringförmiges Element (11) enthält, welches das dem Einschluss entsprechende Element umgibt, und welches gegen den anderen Werkzeugteil gedrückt werden kann;
    Einklemmen der Dekorfolienkante zwischen dem dritten Element und dem anderen Werkzeugteil beim Schließen des Werkzeugs;
    aufeinanderfolgendes Einspritzen von Kunststoff in den umlaufenden Hohlraum (21) und den unter der Dekorfolie liegenden Hohlraum (23), wobei der unter der Dekorfolie liegende Hohlraum durch die Dekorfolie (20) vom umlaufenden Hohlraum abgegrenzt ist;
    Auswerfen des hergestellten Werkstücks,
    wobei das dritte Element (11) so angeordnet ist, dass beim Schließen des Spritzwerkzeuges der unter der Dekorfolie liegende Hohlraum (23) vom umlaufenden Hohlraum (21) getrennt wird.
  2. Verfahren nach Anspruch 1, wobei der Kunststoff zuerst in den unter der Dekorfolie liegenden Hohlraum eingespritzt wird.
  3. Spritzwerkzeug zur Herstellung eines Werkstückes aus Kunststoff mit an seiner Oberfläche mindestens einem einschlußförmigen Dekorfolieneinsatz, insbesondere aus Textil, wobei das Spritzwerkzeug aus mindestens zwei Werkzeugteilen besteht, welche zusammen einen Einspritzraum begrenzen, wobei ein erster Werkzeugteil aus mindestens zwei Elementen gebildet wird, und wobei mindestens eines (5) dieser Elemente dem Einschluss und mindestens ein anderes Element (6) der Werkstückaußenkontur um den Einschluss herum entspricht, wobei das Spritzwerkzeug weiterhin Abdichtmittel (11) aufweist, welche in dem Einspritzraum einen dem dem Einschluss entsprechenden Element gegenüberliegenden ersten Einspritzhohlraum (23) von einem dem der Werkstückaußenkontur entsprechenden Element gegenüberliegenden zweiten Einspritzhohlraum (21) abgrenzt, wobei diese jeweils dem Einschluss und der Werkstückaußenkontur entsprechenden zwei Elemente fest miteinander verbunden sind, wobei der zweite Werkzeugteil eine dem dem Einschluss entsprechenden Element gegenüberliegende Einschlußmatrize (3) trägt, und wobei eine Außenkonturmatrize (7, 8) frei zwischen dem ersten Werkzeugteil und dem zweiten Werkzeugteil angeordnet ist.
  4. Spritzwerkzeug nach Anspruch 3, wobei der erste Werkzeugteil mindestens ein drittes ringförmiges Element (11) aufweist, welches das dem Einschluss entsprechende Element umgibt, und welches gegen den zweiten Werkzeugteil gedrückt werden kann, um den ersten Einspritzhohlraum vom zweiten Einspritzhohlraum abzugrenzen.
  5. Spritzwerkzeug nach Anspruch 4, wobei das dritte Element verschiebbar zwischen dem dem Einschluss entsprechende Element und dem der Außenkontur entsprechenden Element des Spritzwerkzeuges angeordnet ist.
  6. Spritzwerkzeug nach einem der Ansprüche 3 bis 5, wobei mindestens eines der Werkzeugteile mehrere beabstandeten Einkerbungen aufweist, welche in dem jenigen Bereich, in dem sich die zwei Einspritzhohlräume beidseitig der Dekorfolie gegenüberliegen, ausgebildet werden.
  7. Spritzwerkzeug nach Anspruch 6, wobei der Abstand zwischen den Einkerbungen bei einer Kunststoffdekorfolie weniger als etwa 1 mm beträgt, bei einer Textildekorfolie mit dichter Struktur etwa zwischen 1 mm und 3 mm beträgt, und bei einer Textildekorfolie mit lockerer Struktur etwa zwischen 3 mm und 5 mm beträgt.
  8. Einteiliges Werkstück aus Kunststoff mit mindestens einer einschlußförmigen Dekorfolie (20), insbesondere aus Textil, die mittels eines Verfahrens nach Anspruch 1 oder 2 eingebettet wird, wobei die Dekorfolie durch das Werkstück an der Einschlußkontur hindurchgeht, wobei ein Kunststoffteil allgemein unter den Einschluss und ein Kunststoffteil allgemein an der Einschlußkontur gegossen wird, wobei der allgemein unter den Einschluss gegossene Kunststoffteil durch die Dekorfolie von dem allgemein an der Werkstückaußenkontur gegossenen Kunststoffteil getrennt ist, und wobei das gesamte Werkstück unter Haftverschluß des beidseitig der Folie eingespritzten Materials hergestellt wird.
  9. Einteiliges Werkstück aus Kunststoff mit einer einschlußförmigen Dekorfolie (20), insbesondere aus Textil, wobei die Dekorfolie durch das Werkstück an der Einschlußkontur hindurchgeht, wobei ein Kunststoffteil allgemein unter den Einschluss und ein Kunststoffteil allgemein an der Einschlußkontur gegossen wird, wobei als Einschlußkontur geformte Kunststoffteil und der als Dekorfolienträger geformte Kunststoffteil in der Dekorfoliendicke zusammenlaufen.
  10. Werkstück aus Kunststoff nach Anspruch 9, wobei der als Werkstückaußenkontur geformte Kunststoffteil und der als Dekorfolienträger geformte Kunststoffteil wesentlich in der Mitte der Dekorfoliendicke zusammenlaufen.
EP95401196A 1994-05-26 1995-05-23 Verfahren zur Einbettung eines Dekors, insbesondere Textil, in einem Kunststoffteil Expired - Lifetime EP0684120B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9406382A FR2720319B1 (fr) 1994-05-26 1994-05-26 Procédé d'inclusion d'un décor, notamment textile, dans une pièce en matière plastique.
FR9406382 1994-05-26
FR9501383A FR2720320B1 (fr) 1994-05-26 1995-02-07 Procédé d'inclusion d'un décor, notamment textile, dans une pièce en matière plastique.
FR9501383 1995-02-07

Publications (2)

Publication Number Publication Date
EP0684120A1 EP0684120A1 (de) 1995-11-29
EP0684120B1 true EP0684120B1 (de) 2002-08-14

Family

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EP95401196A Expired - Lifetime EP0684120B1 (de) 1994-05-26 1995-05-23 Verfahren zur Einbettung eines Dekors, insbesondere Textil, in einem Kunststoffteil

Country Status (7)

Country Link
US (1) US6054087A (de)
EP (1) EP0684120B1 (de)
AT (1) ATE222166T1 (de)
CA (1) CA2150292A1 (de)
DE (1) DE69527746T2 (de)
ES (1) ES2181756T3 (de)
FR (1) FR2720320B1 (de)

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DE102021117037A1 (de) * 2021-07-01 2023-01-05 Audi Aktiengesellschaft Spritzgießvorrichtung für Spritzgussteile mit Dekorelement und Verfahren zur Herstellung eines Spritzgussteils

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FR2720320A1 (fr) 1995-12-01
FR2720320B1 (fr) 1996-09-20
ES2181756T3 (es) 2003-03-01
DE69527746D1 (de) 2002-09-19
ATE222166T1 (de) 2002-08-15
DE69527746T2 (de) 2003-04-24
CA2150292A1 (fr) 1995-11-27
US6054087A (en) 2000-04-25
EP0684120A1 (de) 1995-11-29

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